Thanks Merseajohn, he's an ace builder and I'm sure he worked on SW but not sure which???
Gonna drop him a line to see if he'll give me some pointers...
The kits are great, one has a broken lug inside for sticking the two halfs together and also missing the paperwork but the other is complete and in fantastic condition.
I think I'll build the lesser of the two as you wouldn't know once built and the other might be worth keeping as-is for now????