The feathertouch focuser on my RASA seems to work fine, but I don't like the sound or feel of it. There is some audible clicking/grinding noise when focusing, and in certain parts of the focus range the feel is noticeably heavier than in others. This is the first time I've had the Starizona Microtouch off the scope (testing collimation indoors during the day), so it's the first time I've noticed it (normally I focus from my computer and have no tactile or auditory feedback). Does anyone else have similar experiences? Is this symptomatic of a problem?