You might call Firecore ask them about returning it. Yes you can drill a 1/2" hole in the top cap flat 2/3 of the way from the center cap terminal over to the #1 cap terminal to shine your light into to check RP. You can redrill your reluctor yourself: drill a bit inward from the ID then use a mini round rat tail file to open it up/break thru to the ID. carefull measureing & if you are too far off there is plenty of area to drill several of em. First try the BB OE roll pin hole. here is one in progress. EDIT I gotta figure out how to work this camera.