[Motorola] Micor UHF repeater question

[n_griggs at bellsouth.net]

I am working on a Micor UHF repeater tuned to 443.7 MHz.  The output of the exciter is about 65 KHz high, suppose to be 147.9 MHz but is actually on 147.965 MHz.    I can adjust it down to 147.93 MHz but no lower.  This repeater is one with a tripler/low-level amplifer after the exciter.  Would changing one of the capicators in the ICOM  that is in series with one of the thermistors bring the frequency down?  Or should I try and get a new crystal for the unit?  This is a new one but I had a problem with the output dropping when the metal cover was placed over the unit.  Grounding the crystal solved that problem along with adjusting the trimmer cap a little lower.    It has been a while since I had to 'pull' a crystal on frequency and most of those were in GE/Johnson/Regency-Wilson equipment.  The cap values currently in there now are 9.5 pf  and 15 pf.   The ICOM model is KXN1052A.