fwharris, thanks for the assist. Yes I tried doing the y axis test from the key board and also the sensor test manually. Both seem to be indicating no issues. The Visually inspected the y sensor wheel and seemed to have no slippage when I gently tapped the motor assembly (clear casing). I do not have any spare parts for the machine and will be on the phone tomorrow to order some of the high potential instigators of the problem. With 50 hours on the machine it should not be wear and tear so I am thinking electrical but you never know.

On the y axis test I got readings of A: 125.18 and M: 256.00.