Thats exactly what happend they didn't even seed the clutch side crankcase seal at all.thankeSounds like you lost one of your crank case rubber seals, there is one on the mag side and one on the clutch side. It might just be displaced and not damaged. Check it and make sure it's on correctly and not damaged. The loss of the seal causes loss of compression and bogging. Make sure you clean your clutch pads of oil so they don't slip. If you need a new seal they sell both seals together but they are cheap
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