Grats on the expansing A-P arsenal. Yeah, you need to get one of the three varieties of 1.875" diameter CW shafts here:

https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.astro-physics.com%2Fmach1-upgrades-parts%2F&data=02%7C01%7C%7C7c3da4ca50b3426a3cd608d7c4913e9d%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637194000400123663&sdata=7Am2U6ITuCkt3FMpFKiJk54QDaWtUor10KUxkA4z5fM%3D&reserved=0

If your Mach1 came with CW shaft and shaft safety stops that lack the delrin washer, ask A-P to send you a set as well.

> On Mar 9, 2020, at 8:43 PM, Bill Long <bill@...> wrote:
>
> Hey all,
>
> Just picked up a used Mach 1 mount to take place of my Paramount MyT I had as my second mount. Nothing against the MyT, I just like my A-P mounts better. Anyhow, I want to be able to use the existing counterweights I have for my 1100. In this case do I just need the bigger bar, and nothing more -- or do I need to replace something else as well?
>
> Looking forward to getting this lovely used mount out for a fresh curve and some good imaging nights with the iDK. One more question would a 10" iDK weighing in at about 45-50 pounds fully loaded be fine on the Mach 1? Its a pretty compact scope, so I would think so -- but it doesnt hurt to ask.
>
> -Bill
>