I got a WC glide plate for my 06 YZ450 and the first thing I noticed was that I could not get my fingers into the hole on the right side to change the oil. I did not want to have to take the plate off every time I changed the oil so I decided to modify it. I ended up making the hole 3" overall from front to back and widening it 1/4" on the engine side and about 1/8" (or less) on the frame side. Now I can easily get a wrench and my fingers to easily reach the drain plug. Hope this helps.