You can get Resinol 90C from Craig Ryan at phone # 623-412-1899 e-mail
craig.ryan@loctite.com It is sold in 4 gallon containers for $300 and I believe that includes shipping Of all the home brew chemistry Resinol is surely the best. The only problem is you must mix the whole batch at one time and then keep it refrigerated. After that, I think the official word is that it can be kept for about 8 weeks but some people have reported keeping it successfully for much longer .....