About a year ago I epoxied seam leak at rear of tank where rubber band holds it down. I worried that epoxy might not hold which is why I clear coated with 2k glamour over cool faded paint to minimize my expended effort in the event epoxy subsequently leaked. Well today I discovered a chunk of epoxy broke off and some seepage. So I either buy a better tank or fix this one better. 

some dude has one on eBay for $450. I have a lower indifference price point in mind that has me fix current vs buy replacement. 

if I go the fix route I will clean out all the gas with suds and let it sit for a few days to insure its dry and then i thought I would clean the heck out of surrounding effected area and solder.  Then smooth the entire thing out and paint mandarin orange and then 2k clear.  

does soldering sound viable?  I have had good luck soldering many things but not a dt1e tank.  Also any recommended source for the white pinstripe decal would be appreciated.   Lastly, I know that their are a zillion posts on color match but if someone could blurt out a paint that’s a mandarin orange match that would be very cool. 

thanks. 
 

I took my tank to the local Machine shop and they welded the tank seam up for $80. It was leaking in several places along the seam after I cleaned the rust out of it with white vinegar and BB's. I would highly recommend getting it welded.

I had a leaky tank fixed at a local welding shop by brazing. That’s what I think you want. Not soldering.

On the subject of paint matching and pin stripe.

Marbles Motors makes custom paint for these.

The pin stripe is not a decal. The tank is painted white. Then tape is applied. Then the Mandarin Orange. Then remove the tape.

I've learned that you can't make any shortcuts or skip any steps when it comes to repairing and restoring these gas tanks.

That one on eBay looks fairly good. And yes $450 is up there but these parts are rare.

Thanks all 

Brazed mine with brass rods after several soldering attempts—no leaks after a season of riding. Tricky process, must use MAPP gas and get metal red hot. 

Pinstripe tape is on eBay. Enduring cycles/motodad. I think mandarin orange might be discussed on the post Darinm started called Yamaha paint matches. Good read overall. You could take your tank to a skilled welder. Seams issues are probably better than pinholes. I don’t know if brazing or solder is better. 

I would say welding or brazing is probably best but my welding equipment nor skills are up to the task.   I’ve had great success with soldering a bunch of these tanks though. One thing I’ve found is it seems like every time you fix one hole 2 more show up right next to it. The trick is getting it cleaned enough for the solder to take. I use a liquid called ruby fluid as a flux after the surface is as clean as I can get it. Here in the photos was a successful repair of one of the front mounting pegs that rusted out. I cut it off flush, made a new brass peg and soldered it on. If you have an area with a big hole or a bunch of small ones close together I’ve soldered sheet brass patches over them too. 

Great info to consider 
I really like my clear coat over faded patina…if I can solder without ruining anything outside of seat overlap I am in good shape. Will take a couple of days to think about this while I burn off gas riding around 

I had a tank leaking at the rear seam and epoxy lasted less than a year. Thankfully a friend's brother does TIG welding and fixed it right up, no problem since.