Can I revert back to 2.5 from 2.6 even if no previous Traktor installs are present?

Long story short upgraded laptops. Moved library over to new machine. Running Snow Leopard at the moment. 2.6 seems to be running okay on this new machine.

Specs:
09 15in MacBook Pro
2.53 GHz
8 GB Ram
250 GB HD

However my X1 and it's custom mapping don't seem to function as nicely with this version of Traktor. The beat nudge buttons take forever to beat match, where as before my phase meter was much closer and only required a few clicks left or right on the X1. Now my tracks are all over the place and require a hefty amount of button mashing to beat match the tracks and align them correctly.

Anyone know of a way I can revert to 2.5.1? I still have it installed on my old machine.

Log into your account on the NI website and look in the available downloads section. Should have links for DL of every version of traktor that's come out since you bought your licence.