big bear 400 timing chain guides

I can not find in any manual or thread how to place the timing chain guide??? What holds it in place??? is it the same height as the other side?? This bike cam with the chain in the bottom because they broke the oil cooler bottom fitting, pumped the oil out and fried the top end.
Also looking for the newer style oil cooler or a way to adapt a 96 oil cooler to the flare fittings of the newer lines?????