The Flat mounting ring works perfectly fine on guitars with tune-o-matic bridges, and arch-top guitars.
It has a custom mounting ring, because, let's face it, that pickup was made for a Dean ML.
You can put it in other types of bridges, but it's a tight fight in some cases.
You're wrong. I have it in an SG with a pickguard and it's perfectly fine.
jimmy:
There's no "right" or "wrong" with guitars, pickups, or tones. If homie doesn't like his pickups as low as you like yours, he's not "wrong," so stop being a "dick."
To get back on topic I have a Made in West Germany (read: old) L500XL that has a tall mounting ring. Problem is, I want to mount it in a guitar with a low profile bridge (recessed OFR). With the pickup as low as the pickup mounting ring, the strings are on sitting top of the pickup with anything other than high action.