Another AF cr500

Do you have access to any other shocks? Something with a remote reservoir would be an easy fit.

If that is a solid spar on the frame, bust out the die grinder👍

Show us a picture of the shock with the body eye rotated to the Right. And, with the 'clocking'  seen on the reservoir arm in that picture, it will be then down and forward.

Then we - well you, can see what sort of clearance issues you really have . Perhaps just a bit of 'die grinding' may be needed, perhaps far to much. 

I Do Not Recommend / Endorse heating a frame - especially an Aluminium one - and wielding a Hammer on it, unless it was but the very, very barest of 'taps', for clearance.

 Whatever you do, run the shock through it's travel - well, probably just a flat bar with the Extended eye to eye measurement, And the compressed eye to eye measurement, to see how the shocks angle changes during compression. Generally, it's towards the rear with reference to the bottom of the shock, and thus, the reservoir arm and reservoir going 'backwards'.  Needing more clearance than you may initially think. 

You may  - well, almost certainly it being an Ohlins - be able to get a different body eye - with a different 'clocking' and / or 'drop'  to it..  

Or, use a body eye on The Original To The Frame  shock that takes a hose, with then a reservoir to hose end cap that has the compression adjuster 'port'.  Heck, I've done a few  such things over the years by cutting the reservoir arm, and machining weld in ends  , with large,  banjo bolt or straight fit hose  threads in them , for both the arm and reservoir cap.  But, be wary of fitting a hose and banjos fittings with  a restrictive  inner diameter, - that can really 'eff' up the compression circuit. Like the people who fit a brake hose  as a reservoir hose, and wonder why things are so bloody harsh, no matter what compression setting they run.........