LXD75 SN6- some EPs can't reach focus?

Hey Folks-

I just took delivery of a Meade LXD75 SN6 telescope yesterday. While the astronomer's curse (rain) has kept me from doing any real obeserving with it yet, I've noticed that I can't achieve focus with some of my eyepieces, all Televue: specifically, a 20mm & 40mm Plossl, and a 4.8mm Nagler. My Televue 8-24mm zoom works fine, another 40mm works fine (Scopetronix), as do the rest of the eyepieces in my stable. I've got the focuser racked all the way out, and I'd bet another quarter inch would do it. I dimly recall being told once that Teelvue EPs are parfocal within a series. Very frustrating. Comments or advice are welcome.

Thanks,

Mark

Playing around a bit more with this today, the 20mm Televue is within a hair of focus. The 40mm needs an additional finger's width or so to achieve focus.