I have a lot of green wood processing from tree surgery to do, and although I have a chainsaw, it is noisy and annoys the neighbours. When new, my bowsaw blade is like a hot knife through butter, but after a few hours use, the brown non-stick coating (Teflon, I presume) wears off, and the blades are not so easy to use. They are only about £6 each, so I'm probably being a bit tight, but if I spray Teflon onto the blades, might they be resurrected even if only briefly? Any tips on how to do this and get maximum life from the blades?