Oxy/propane to oxy/acetylene conversions

I’m looking for help! The company I work for uses oxy propane. I
have oxy/acetylene mini torch. The work I am doing is balling up to
small gems and fine chain and I have tried and tried to get the same
results that I am able to get with the oxy propane to no avail! I
have used different tips, settings, etc. Any suggestions? I seem
to get too much heat no matter what I do. Thanks in advance