For the past 6 or so times I’ve powered up my Glowforge Pro to cut something, it starts decreasing in power towards the end of the cut. It will be cutting great for the first 75% (ish) of the cut and then slowly taper off in power until at the end (last 25%) it is only making it halfway through my 1/8 birch plywood. I can even see the light of the laser get dimmer and dimmer. No matter how big the cut is (40 seconds to 8 minutes or more) it slowly looses power, and the last 25%(10 seconds, 2 minutes) won’t go through. Even if it starts a new line in that last 25%, it doesn’t gain the power back but continues to decrease. I’ve cleaned the lens twice, unplugged and restarted multiple times, switched computers, and made sure my material is flat and free of knots or oddities… It is even doing it on acrylic… Nothing seems to work. I can’t cut anything. Need and would love some help!