[Elecraft] K2: VFO control voltage problem.

[Thomas]

Hello.
I know this has been covered before, but I could not find anything at this time.
I have 7.56V on 30M, 20M, 17M, 12M and 10M both on low and high part of the bands.
On 3.50MHz I can't get the VFO voltage above about 3V, same on 21MHz.
On 7.0MHz I got aprox. 6V vhile on 7.3 I got aprox. 7,56V. 
I have re-checked the capacitors C71 to C74 and the values are corect.
I have vound the transformer T5 as on the drawing and several pictures on the internet,but it seems like it migth need another turn or 2?

73 de Thomas LA3PNA