Not sure what I want.... I have many adaptors, the drill bit adaptor with head. I will gather all the information in tonight and post. Here is a list of the issues I have had (with the stronger spring).
Dust collects between the head and the adaptors, making if very hard to remove the adaptor till you get the dust out.
Even at 10K to 12K (as many have proved you can run), the adaptors will spin in the head unit when a high strees zone is hit (really obvious in oak with the grain gets tight). This cause a side effect of removing the finish of the cutters.
For some reason I can not longer get the V cutters to spin true when using it true
Noise level from the router is much higher with the attachment in versus out. My house is much quiter running the router without it in.