alas mack boring the east coast distributor will only sell to yan retailers, not to us humans. that being said, there are adjustment nuts on the yan engine mounts. has anyone tried to adjust the nuts ? are the mounts bottomed out? what's the face out at the coupling ? how many hours on the engine, how many years and seasons on the boat ? (Boats in the water used all year like FL count as 2 seasons for purpose of estimating when the mounts might need to be replaced. ..) yan used to say 5 years for 5 years/ 10 seasons of boating ...