Header tank issue

Thanks, Matt! Where to buy PRC B 1/2 or B2 fuel tank sealant?

You can try to remove the sealing compound on the outside of the tank and recoat it with PRC B 1/2 or B2 fuel tank sealant. DO NOT use RTV or JB weld.

Might need either a new header fuel tank or repair. Logs show "pin holes" were found and repaired by "cleaning and sealed using REM-SEAL" in 2011.    Now there is "seepage" coming from the area  Does not appear to be a leak; however, the sealant apparently is weeping a little. Can the area be cleaned and resealed with RTV or some other sealant or do I need a new header tank?  If new tank where do I look for one and what is the cost including installation?