Ayup Reggie, Ha, I try not to be 'cos it's a weakened bolt, ya might remember some time back, I drilled the bolt down the centre & then in from the side near the head to meet that hole. The idea being that the oil flowed with a turn or two of the screw instead of being screwed out more to bleed. Seemed a good idea at the time. Seems it just needs a good washer not a 10 times reused/flattened one cos I change oil & filter every 600'ish miles. It uses a bit anorl, mebbe 150ml to 350 miles. I should write to Yamaha about this.