Doepfer

Dear, my Doepfer a1434 VCLFO cycles between -5 volts and +5 volts, 
would it be possible to have it cycling between 0 volts and +5volts? 
Or between 0 volts and +10 volts? 
Should I try the "offset" and "scale" trimpots on the pcb? 

http://www.doepfer.de/A100_pictures/doepfer_a143_4.jpg 

http://www.doepfer.de/a1434.htm

Thanks!
Floris