A lot of guys don't run with any tank coat including myself. When I got my old tank I threw bolts and nuts in there (counted them and took a good minute to get the last one out lol) then shook them around in the tank with soap and water, multiple rinses, till no more loose tank coat or anything came out. Dried with compressed air, rinsed with some gas then keep your tank filled with fresh gas.
Put in a petcock filter and then an online fuel filter.I've been running that tank for over six years with no carb fouling.