Hey,welcome man.The green putty is just a different brand of polyester putty but it's basically the same as the rest.You're right about the Basecoat Clearcoat,but I was refering to bondo,I didn't realize there was a putty called that.Those puttys are usually hardner sensitive compared to mud (bondo) and kick off pretty fast.Every time I mix some I have to remind myself to use 1/2 the hardner I would in mud and try to work fast.Also if you use less hardner it won't 'boil' and then lock up causing really small pinholes.They're so small I usually miss them until I prime it and then they show up.