I opened up the lid on our old 1000Q, which is the only followspot we own. The knob on the back for beam size adjustment, and the focus knob have always been really loud, jerky, and difficult to work with. I looked at the Iris inside, and the leaves are almost rippled, I'm assuming from heat damage. Do you think buying This Or is this something that I should not try to repair on my own? I'm worried to send it to our local dealer because the only followspots they deal with are Comets, and their quality is sub-par.