PF is correct... bearings too tight, I know the bushings on my BM bind up some of the rods if they are tool tightened all the way... I just back the nuts off a bit to get each one just right. A couple of the nuts seem quite loose, but they seem to remain fastened.
Just curious are your rods bent or pitted at all, that would be the best reason to upgrade. The newer rods are nice, but not a huge or dramatic improvement over the older chromed ones. New rods can take a while to break in/smooth out. I would evaluate the BM walls and play field before spending that kind of money on rods. There is also some math involved related to parts costs vs. buying another used table. You might consider the newer footed figures on some of the shooting rods if your serious as well.
You'll get a lot of opinions on warrior; it really comes down to do you need a pretty good home table or do you wish to compete at warrior tournaments. Parts are cheap and the table plays well. In many ways it is great choice, but has a few compromises relative to a commercial table.
Considering you more-less have a north american "standard" competition foosball table, I would invest and work with it where appropriate. Note that the coin op mechanism can be bypassed by cutting and assembling 4 pieces of wood to temporarily replace the ready ramp tray and blocking the ball trap entrance. This presents balls on the rail for easy practicing, balls can not fall in the cabinet, and the coin mech is preserved from unnecessary wear and tear...
Fooz!
http://www.valley-dynamoparts.com/docs/Tornado_BD_2010_Online.pdf