locking bolt/take down lever hard to operate

[stretchman25]

Several months ago I purchased my first P-08. It is a “mix master special” or in more appropriate terms is a gun that was pieced together from various parts. When I disassemble it, I have to use a hard wood dowel to move the locking bolt/ disassembly lever to the downward position. Watching videos of field stripping a P-08 show that just finger pressure is enough to move the locking bolt downward and thus allow removal of the side plate. Are there any adjustments that can be made in order to make moving the locking bolt downward easier?