quick easy oil change ( 1500 km on new engine ) till oil filter remover self distructed, went to screw driver threw filter and twist untill shredded filter completly,next hour swearing and staring at it wondering how i would ever get the rest of it off. got it all off and thought i would tackle something less frustrating. hard top does not sit down all the way on new windshield frame. so up i hoisted the top and took another look at new frame and old frame. Not the Same along the top edge. new frame has a big lip that soft top may clip into, old frame has no lip atall. removed all new seals to see if it would sit lower, no way. bent lip over more in hopes that it was the cause, but no. abandon the top project and investigate under jeep for knocking noise. exhaust down pipe hitting on front drive shaft, after market steering hitting on diff cover, drag link could be hitting tie rod were they connect together. quit drinking 10 + years ago, really thinkin of starting again.