Quoted from WannabeWizard:
Just traded for a GB Pro. All stock. Should I invest in a color DMD and a shaker? What other mods do people suggest? LCD DMD or LED DMD? Any suggestions will help on mods to enjoy the experience. Thanks
For Premium/LE (most apply to Pro):
Adjust height of drop targets
Adjust spring on drop targets (20-25 coils up)
Check & change balls
SLIMER butt nut - check slimer positions and butt nut
Put a washer under right ball guide (blue rubber bumper) to help playfield damage
Put mylar down in shooter lane Or install Cliffy's
Get the green spring for the manual shooter rod, and the high compression spring for the auto-launcher
Install the plastic air ball protector and right orbit protector (CPR9999 makes the best!)
Adjust the coil power in the service menu ADJ > G.B. > Feature Adjustment #11 - Trough Eject Power. Mine is set the lowest power 176
Check 14th street subway switch to make sure ball is changing switch state
Ball guide rod 1/4" higher - hit with hammer (behind each sling shot area - this prevents ball jumping in the drain areas)
Hex spacer 1 5/8" (or 1 3/4") - change this on the right plastic 1/2 circle ramp (this shorter hex makes it easier for ball to go up).
For those interested, making another run of Airball protectors. Check out Ad and videos.