I have been away from building larger open structure plane for a while. I have been building small electrics and covering with Solarfilm etc. I just started covering a built up sailplane with open bays. I have a number of rolls of 5 year+ old TX Yellow Monokote. I started with the yellow as it was the lightest color I'm using. It behaved as I remember and went on flawlessly. Next step was the adjacent bays, to be covered with a brand new roll of TX Red recently purchased on line. Night and day difference. IT is most definitely NOT the same product. Not even remotely similar application properties. I removed and re-tried several times. I give up. Now I have to clean the old stuff off. I thought it might be just me, but apparently this problem is endemic. I will be sending a sample off to Top Flite for comments and will relay any response.

There was a statement that Hobbico had been forced by EPA regs to change formulas. That could effect the adhesive and pigment, but the film is (was?) I believe a thermoplastic polyester. That is the item that appears to have changed. I know from working in the satellite business that, that product, for the rest of the community of users, is unchanged.

Don't forget that the in-flight space shuttle failure ultimately was traced back to changes in the foam insulation applied to the tank struts. Why was it changed? You guessed it, reformulation of the foam to comply with EPA requirements: http://brian.carnell.com/articles/20...-space-shuttle