It looks like you switched the air tubes between the 1358 and 2027.
I still have the 2027 and tuned it to 625-660FPS for 4 mags (48 shots) with 7.4 grain pellets.
The 2027 would make a great short compact with the right stock. I just wish I could get a 3D design and print a cheap short stock for the Beeman 2027. I can 3D print anything if I have the STL files.
Here’s mine at 27.5”. Western Sidewinder S in .25. Shoot mostly JSB Mk II 33.95g at 875 fps. It is quite accurate out to 100 yards and stacks pellets at 50 yards. I was surprised at how well the full auto groups one you get the hang of shooting it. I’ll throw a DNT or Pard NV or thermal scope on it and use it on raccoons. Semi-auto is great once they’re treed!