Rick's Moog VCF Clone question

[DaDA SaLAMaNDeR pOLyP]

I want to build Rick's adaptation of the Moog ladder vcf.  I don't really 
care about the temperature stabilization part of the circuit, so I'm 
wondering if I could just replace the LM329 diode with a regular diode or 
a resistor.  I suppose I could just leave out the temp. control part 
altogether.  IT's not absolutely essential that the Exp. Geneerator 
transistors be matched, is it?  Doesn't seem to be an issue with the EMS 
vcf clone.

R>