Apart from the saddle on top of the scope, no - it's as it was delivered from Testar to me around 2 years ago. It's reasonable without a flattener for AP, but I found that using my Orion Field Flattener for small refractors actually did a decent job - so I just used that instead. All my images - quite a few of which were taken with this scope - are on Astrobin here:
https://www.astrobin.com/users/jhn.holgate/