My 21” self-propelled mower has been performing poorly since I first began to use it this summer, with "strips" of higher grass visible in cut paths and clumps of grass not being vacuumed up into the bag. Tried checking here online for solutions to these issues but found little help and so I have been mowing back over these left-over strips, re-cutting them, which doesn’t give me confidence with EGO. This week a new issue has begun, where mower revs-up at random - it sounds stressed, with higher RPMs. As a result, the mower’s already poor suction is now much worse, failing to vacuum substantial amounts of cut grass into bag, leaving massive amounts of grass on the lawn and not in the bag, which I had to rake up by hand. Not happy about this and have attached a photo. I will call the Customer Support number tomorrow but thought I’d see what other EGO mower owners have discovered about these issues, with perhaps some solutions. Thanks.