timing at 30 BTDC?!?!?!?!?!?!?!?!

i have marked my balancer using the existing pointer, since i know it's right
i set the pointer to 10 BTDC, and marked the balancer at 0, then put that mark at 10, and marked again at 0, and did one more....
so when i checked it just now, the second mark was lined up with 10, which is 30 degrees...(the first mark, add 10 to the pointer reading, the second mark, add 20 to the pointer, third mark add 30 to the pointer....so i can read up to 45 degrees right now...since the pointer reads to 15

anyway....my thoughts are that since I have about 8.5-9:1 compression ratio, and a MP .509 cam, that i can afford more timing....sound right?

if so, i need to do some research to find optimum with my setup.....or find a chassis dyno here.....somewhere...