430 Convertible top hydraulic fluid change

Im not really sure about this but i thought it would be a good idea to change out the fluid as it most likely been in there for 15 years now. I couldnt find a change out thread for the F430 so here it is but im stuck at the moment as i dont want to force anything. In the pics all the bolts circled in red are removed to give you alittle more access and room to move the unit out. The bolt on the bottom in green secures the unit. Once that bolt is out the unit slides up ( slides are in green). The problem im see is its pretty tight. I can slide it up only so far then i started to run out of room so i stopped. I noticed those slide are bendable but i didnt wanna do that either untill i asked. Has anyone with a 430 removed this unit? Thanks
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Yes I did but he doesn't really mention how it came out except for a 90 degree tilt. I want to do a visual on the fill screw because 5mm allen seems loose