Thanks BEB.
I managed to completely remove some sections, and re-applied using copydex. I ventured into a large model shop "down south" when on my travels, and asked for some latex glue, and I think they thought I had mistaken them for a fettish shop...so off to B&Q. Looks like model shops are for buying ARTFs now...
I took your advice re minor splits, and bought some foam friendly cyno on-line, and these are as good as new now - thanks!
Good to hear that there are still a few oily hacks around - I'll treat the old DC Bantam to a new 6x4...
Sorry for the delay, just managed to prise the 10 year old off the computer.
Alan