The two mounts that seam to work best on the dynafocal mount are the LORD J9613-40 or the J9613-49 they come with a tension and compression side as well as a silicone dampener that sits inside,this works to dampen shaking on shut down. Like all things Aerospace there is a date code embossed on each piece. I've bought and returned a set on ebay that were old mounts re-boxed in new box's with fresh date codes. You need four and at $125 each they are not cheap and you want to order them when needed.