MOTM

I am assembling a 440 kit I got a long time ago. The instructions call for 3 Spectrol 248J 100K pots. In my parts bag, I don't have 248J pots, I have 3 148 pots.

I think I may have a parts mixup, I assume I cannot use the 148's in place of the 248J's? Is that correct?

Thanks
Andy