After a few LP's I began to not hear the bass. So after you all confirmed that I would not damage anything, I switched back to the 4 ohm tao. The bass is back.
The suspension of any loudspeaker takes a while to break in. You might try the 8 Ohm taps again in a few weeks and see if the bass is still missing. The 8 Ohm tap is more efficient by a few Watts, depending on the output power the amp is capable of. That in itself isn't a big deal.
The load on the power tubes is much higher if the 4 Ohm tap is used on an 8 Ohm speaker. This might mean less power from the amp, but might also mean less distortion (less distortion = greater transparency). So its always worth trying.