2014 XC engine is in and the front cover came off easy but the back will not so far. All the bolts came out easy. I have pushed the bike in gear to change the lifter position but no luck so far. There is a small black and orange sensor and short plugged hose center front of the cover that I have not disconnected. Does not look like it would help anyway but maybe that is the key. What am I missing? Thank you.