Hello Grumblers, I'm hoping that some of you can help me troubleshoot some projects that all of a sudden seem to be multiplying. My partner and I have a shop and we primarily make painting supports - canvases, stretchers, panels, etc. We also frame paintings, make crates, and do a little conservation work on paintings (v light, mostly strip-lining tbh). Apparently, word has spread around that we're just the people to talk to about mounting pre-existing artwork on to new supports, and I have a glut of projects lined up in this vein. Two of them, though, are giving me pause and I'd like some advice. First things first: a client came in and wanted to mount artwork (monotype on Rives BFK), onto RSG-sized portrait linen - stretched on a stretcher, with about a 1/4" float all the way around. We did the project using BEVA 371 film, and they looked great - perfectly smooth. After about a week, though (thankfully, they were still in the shop to be framed), the linen started to shift a little on the float and the paper buckled slightly in places. I re-activated the film and weighted the pieces for about a half-hour, until the film was totally cold, thinking perhaps I had somehow not been even in my mounting the first time, and all appeared well. Now, a week later, it's happening again. We think the way to go will be to remove the linen from the stretcher, make a cradled panel, apply a layer of Beva film on the face of the panel, place the print/re-stretch gently the linen, then activate the Beva to really stabilize the whole thing. What do you fine folks think? I also have another tentative project that's a series of oil pastels on paper, mounted in a similar way onto the face of stretched canvases. With oil pastel, there can't be any heat, so Beva's out, and it should be reversible, so something like PVA is out. What do you think the way to go here is? The fine folks at Talas recommended Gudy 831, but the reversible qualities of that fancy double-stick tape is solvent-based, and I'm not really very comfortable with that. Any advice is greatly appreciated. Thanks in advance!