Any chance you could put up a video of how you play this? Even 5 minutes I think would be instructive to those of us who are constantly fighting against those side drains off the side targets and the well walker (not to mention SDTMs out of the pops).
The highest score in our monthly league is 250m and we have some really good players (granted, it's on a pro). The walker record is 45 (granted it's not something people aim for in a comp).

Hmmm problem is it's a location pin on an extremely tight tilt. Those nice pop exits to the left flipper only happen 1 in 3 times or so; the rest of the time it's a real fight and with a sensitive tilt often a losing battle. Maybe a block of wood under the front right leg will help...a bit hard to get the spanner out in the location it's in...