Sony SCD-XA5400ES owners question

I just purchased a Sony SCD-XA5400ES SACD/CD player. It replaces a Sony SCD-XA777ES unit. I want to ask any other owners out there about the round track control knob of the right side of the player. On my older Sony the control knob operates with very definite click detents in forward or reverse, but the 5400 knob feels very indistinct, with almost no click detent feel (especially advancing tracks), making manual track selection using the knob rather difficult at best. Do I have a defective control knob on my 5400, or do they all operate with a rather mushy feel?
Thanks any and all for your kind input.

BTW- the 5400 is an extraordinary CD and SACD player...if you are not an owner I give it my highest recommendation; do give one a listen if you have the chance!