uhf gp68 on wrong bandsplit

[Batman]

found a gp68 uhf at a pawn shop for 50.00. its presently on 406-433 i need to move the split to 430-470. i know this isnt right because the specs show this radio as 430 to 470 not the present bandsplit of 406 to 433. i recall having a gp68 with this issue one other time and seem to recall a way to move the pll back to the correct split but cant seem to locate the info on it.

[Will]

It shows the 406 - 433 bandsplit in my service manual.

[Batman]

oh well guess i got a useless radio