Hi!Got a sweet 2005 wr450f that I used as a daily sumo. Love the bike, but to use it to its full potential took it off-roading in the weekends. Last weekend however the chain snapped and took a piece out from the crankcase, exactly where the clutch cable connects to the block. I noticed it immidatly as there was no drive and when turned my head down to look at the sprocked i saw oil spitting out. As I saw oil gushing out i turned off the motor, so the internals should be ok. What are my opitions now? Since there is a piece already out of the crankcase any chance of an easy plastic weld repair is out of the question?So Im guessing I got to strip down the whole engine and replace the crankcase? However from what I've read so far, people have said i should replace both sides, or can I just change the left side that has a hole in it?Attatched some pictures of the damages aswell.Any help and suggestions are highly appreciated.Greetings from the Netherlands!