Hi Snakesnsparklers,
The v-freq pot in your monitor could be adjusted to acommodate the working range from fifty-something to 61-62. If you want to limit the upper vfreq then set:
monitor custom
crt_range0 15625.00-15800.00,49.50-61.00,2.000,4.700,8.000,0.064,0.160,1.056,0,0,192,288,448,576
Then lower that 61.00 value until you find a point where this game doesn't go out of sync.