Pickups don't fit?

[FELINEGUITARS]

you bend the tab that is connected to the pickup. the actual leg itself doesn't get bend so much. do it carefully and nothing will snap. just keep the bottom leg at about 45 degrees from the stub attached to the pickup. just push it inwards, and then bend the leg so it sits straight against the pickup cavity.

i realize my diagram was the wrong way. here's a more correct one
 
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Be very careful doing this - I have seen an unfortunate pickup come in where the owner broke the leg off and it's not an easy one to fix - aparet from getting a new baseplate

[Alex]

EMG 7-string pickups (annoyingly) use a bass guitar pickup housing, which is what is causing these problems.

[Keven]

forgot to mention. don't forget to run a wire from the bridge or trem claw to the ground. emg pickups are ungrounded so you have to ground a BKP properly.