LM324 based LFO voltage question.

[RevTor at aol.com]

TomG, or anyone else here..
I built the simple LM324 based dual LFO from TomG's page.  I t was designed 
for 12v use.  Any mods I should make for use with 15v before I plug it in?  

Oh, I got the Dual MS20 filter to work great with the 15v..  changed R24 and 
R49 to 1k to bring the range in check, and changed R11 and R36 to 57k to 
bring the res volume down a bit.  Works good now.....

but its easier to just ask you guys.. so the schematic in question is here:
http://www.xavax.com/efm/synth/cbook/pics/lfo1a_sd.gif

12v to 15v - anything I should be aware of?
thanks,
~Steve