I started my 02 426 last weekend when the bike was cold soaked (30 degrees). It started and I tried to warm it up to quick (stupid-stupid-stupid ). It ran great for 30 seconds and I wrapped it up and then: It just spooled down like it was out of gas. I went to kick it again and it kicks through without the need for the decompression lever. It has compression in the kick, but only about 60% of what it use to be. I thought that I messed up the rings. I (quickly) replaced the rings, piston and seals. But to no correction. It still kicks though with 60% of original compression and no start. The decompression lever is not sticking. It seems to be working properly.