Distributor Over-Advancing

Hey all, I'm having a bit of an issue, I have a 318 magnum carbed with a new distributor and FBO limiter plate with a stock light spring and a gold FBO light spring.

The issue I'm having is that no matter where I set the plate, I get way too much advance. I had it set to 16* at first with 14* initial for a total of 30*, but when checking it with a timing light I'm getting over 50* of advance! So I tried setting the plate to 10* and kept the initial at 14* and the least I can get is about 36* of timing, which is still too much.

My question is what could possibly be causing this? I'm using an aftermarket coil and 7 pin HEI module if that makes any difference, any help is appreciated, thanks :thumbsup: