The last couple of prints I have done I had to reduce the speed of the glowforge to about half or maybe even less. We first noticed the seemingly reduced power before Christmas last year but were doing mostly engraving and that seemed to be ok with the materials my wife was using. We always had to reduce the speed by 10 or 20% on proofgrade materials but now I have to reduce it about 60%. Is there an easy way to tell if the LASER is losing power? I guess I could run a Gift of Good Measure test but I feel confident that it won’t cut through.