I bought a lot of Flex Coat From David Norwich (bottles) and have the measuring gubbings to go with it. Only had an issue with one batch and I don't think I mixed it for long enough. Went OCD with all the other batches and all have hardened perfectly.
Will probably get some of the light for my next project, got the standard very cheap so not worrying about it sitting there.
Thanks all
Anyone come across those guides I linked from American Tackle?
Cheers
Ben