Over the last few months my 2000 M750 has had a very slow leak that I had not tracked down. When changing the oil today I noticed that it was coming from the cases on the left side right by the one of the 10mm allen bolts, the one with the clip holding the hoses and tubes. I checked the allen bolt and found it to be very loose. All of the bolts on the left side seemed to be looser than what I would think is correct. I tightened each with a socket, should I check these often or is it out of the ordinary that these became loose. Would this also be causing the oil leak? The other side of the bike was fine. BTW, I bought the bike las summer with 1057 miles, it now has almost 5000.