Hi folks I am a new owner of a 2005 bx1500 with 225 hrs and I am doing routine service on the tiller it came with. I checked the gear case oil on the top and it seemed over filled, oil poured out of the lower set screw plug and I believe it is only to be filled to that level so I let it flow until it was done. On to the issue...the chain case seems to be sealed I can see no bolts to check or fill he case with gear oil. Am I missing something ? Thanks for any input!