Quoted from adamtoth:The upper left magnetic rollover only registers sometimes when the ball goes across it. It seems if there is any slight hop off the rail as the ball flies by from the shooter lane, that it doesn’t register, even though it seems like it passes right over the top.
I had (have) a similar problem. I mitigated most of it by making sure there's enough clear removed from the insert so that the button rests as flat as it possible can to eliminate a ramp effect into the ball hopping over the MRS (and therefore not registering). Also the position of the MRS really matters...I experimented with several positions until I found one that registers most of the time.
While doing the above, I noticed something I never really noticed before. At first, I thought maybe it was a CPR repro error but the dimensions are the same on my OEM playfield. There is a lot of playfield space between the outer ball guide and the star rollover. If the ball travels up through that space (or even over the very outer edges of the star rollover), the MRS won't register. And I think that's ok....even with the original leaf switch for the star rollover, it wouldn't trigger unless the ball travels directly over the star button.
In my test gameplay, I'd say those two star rollovers on the left register about 75% of the time. And the 25% they don't, I usually notice that the ball actually went up that lane in the space to the right. I'm learning to live with it and let it go, lol.
Quoted from adamtoth:I find the saucer shot really hard, and only accessible on the tip of the left flipper.
I've found the same. Sometimes it's a bit easier to make if you have the right flipper raised (engaged) when you make that tip-of-the-flipper shot attempt. A little bit more margin for error for the ball to enter that alley up to the saucer. Kinda like making the Away Team shot on the Stern Star Trek pin.
Quoted from adamtoth:Right flipper shots are limited because you’ll end up just hitting the activated upper right flipper which blocks access to the upper playfield when activated.
I've accidently made the right flipper backup shot into the saucer a few times....I'm trying to figure out the geometry and learn how to do it on purpose!
Quoted from adamtoth:I haven’t had any problems with the NMP magnets and superglue. I used the heavy duty loctite ultragel in the blue/black bottle.
I may have to try that loctite ultragel myself. I had ANOTHER magnet come off today....that makes 6 times now, and this one was one that I had re-glued with epoxy. I'm also going to experiment with velcro and see if that works (and for how long). Part of me wonders....I did put in upgraded 1993-era Williams flipper assemblies. Nice and strong. I'm wondering if maybe they're too strong and hitting the targets harder than the NMP magnet design was tested on.
I'll report back on the velcro experiment, going to try that this weekend.