[john]

Does tinning fluid eliminate the need for tinning? I thought the tinning fluid was an acid to prepare for tinning. I might be wrong but I've always seen the area tinned before the lead. That is the base for the lead to adhere to. Might not be a bad idea to buy a stick of new lead that is free from impurities to try.
Eastwood has some lead kits with video. Leading is hard enough for a beginner but you need the right equipment and knowhow. You ought to ask the question in the body work section. Some pros over there. Good luck sounds like it would be a good skill to learn.