Evening peeps

One thing I've noticed over the last week of getting used to the Morini 162e, is when I bring it up in my usual stance, the fore sight blade appears to one side (the left) of the rear sight cut out. I have increase the pressure in my thumb to compensate and this centralises the fore sight.

Is this my musculature thowing the end of the gun to one side and must be trained out?

Many thanks

Clive