How to remove Uragan 1 pellet probe?

[my87csx481]

See title. I need to remove the pellet probe. Is it as simple as removing #107, circled in the image below? Does that screw need to be heated, to release loctite (or similar) thread retaining compound? I've already tried, and it does not want to budge, using moderate force.

I've got the barrel out, and the access screw/cover (#53) removed. I feel like the probe should slide out toward the breech, once that screw is removed. Any experiece or suggestions are greatly appreciated.

 

[my87csx481]

Finally got back to this.

#107 does have thread locker on it. I used a torx socket with a 1/4" drive ratchet to remove the screw. I initially used a short L-handle torx wrench (not enough leverage).

I also removed the leaf spring and ball detent. The probe slides out the back of the block.