Hey,
I just built my first bike a couple of months ago and used the same motor and bike that you have. Powerking and Jaguar. Have about 250 miles on the bike and am very happy with the motor. I was dissapointed that the motor mount had to be modified because I chose the Jaguar because from the pictures I found online it looked like the motor would bolt right on but it didn't.
Couple of things; I am pretty sure that you do not have the sprocket mounted correctly. The spokes should go between the rag spacers. That is why they tell you to cut one of them so it can be placed on the inside of the spokes in the instructions. The pictures that fairracing31 posted show the correct install for the sprocket.Those rag spacers grip the spokes and transfer the torque from the sprocket to the spokes.
I also used the 6m stock to cut and make my motor mount bolts. Was lucky and found some 24" 6m all thread bolts at the local hardware store. I used some of the left over stock to shim inside the tensioner mount to make it tight. Also had to replace the tensioner bolts with US bolts after I stripped them trying to get the tensioner tight. The shims seem to work and the tensioner has not moved.
I am including some pictures of my motor mount. I made some extensions from some 3/8" tensioner pins that I found at home depot. The 6m bolts fit snug inside the tensioner pins and I cut them to fit the gap I had on the back motor mount. The motor is rock solid and hasn't moved since I installed it.
I ruined my back wheel and had to buy a new one when the master link failed on my chain. That sucked hard. Had to buy new wheel and remount the sprocket on the new wheel. I suggest strongly that you DON'T use the master link on the chain. Some people say they have never had a problem but I am not taking a chance. Have put 200 miles on the bike since I removed the master link and no problem.
Do a search for my posts and you can read more about my experience with the Jaguar and the Powerking motor and see some more pictures.The bike is running great now - adjusted the throttle sleeve and really got a big improvement in power, I moved the clip down one slot ) but I am having flat problems now. After no flats in over 200 miles i have had two flats on the back tire in 5 days. Gonna look in to the kevlar tires.
The close up picture of the engine mount that shows the red toolbox is after I had the motor mounted the first time. I was really proud of this mount until I tried to put the chain on the chain was too short because the engine was to far forward. The extensions ended up being 1/2" long on the final mount. I also had to bend the muffler a little to get it to clear the front post.
Here are three of my posts:
Suggestion on what to do with the master link in your new kit!
Blood, sweat, fun, now the tears. Help!
Busted rear wheel replaced
Good luck