I have repaired a lot of dented up tank with great results.. I like to sand to bare metal the whole tank then fill as needed...you will want to start out sanding the filler with either 36 grit or something close and as a final sand with 220 to 400 grit...it usually took me a week to fill and sand to get it perfect because the prep work under the paint = makes a great looking tank...I cant remember the paint that will keep from bubbling when gas hits it but that's what you want to use , but it's pricey.....Good luck with yours and include some pics please.
our original 85 we bought new, 2 - 86 police specials
250r dust runner
04 Yamaha kodiaK 450 snowbuster ! Brute Force 750 dust collector .
Bunch of es stuff I been buying for next builds....
Gone but lives on in my aching body the mighty 350x collection . A Beat 85 es im gonna rebuild