Sounds like a different one, got mine about 2006 and don't think it had been available that long.I don't remember who made the resin model I tossed out. It was about 2 feet long and the body was cast in solid resin. Heavy! I got it in the early 90's, like 1990-91. Was that Studio 2 kit around back then?
The red stuff is ok for testing and sands fast without taking off any more plastic, but yes it is soft and certainly not ideal. I was thinking of trying flexible bumper filler as it seems to have a similar makeup to the plastic I am using.Jon, the 3M Acryl White Glazing putty is the best for this application as it is finer and tougher than the 'red'; it allows for an extremely fine feather and a great polish if desired. Used to be 'Acryl-Blue' but for some reason they left out the pigment and discontinued the blue formula... but same stuff otherwise. Granted, the formulas you have available to you in the UK may be different... I just found the red I could get here in the US to be a poor product for modeling work.
What is the price of the white acryl over there can only find it at an absurd price on amazon.