Tri X (400TX) in Perceptol

I´m in the process of testing some 400TX at the moment and need a starting point for my development. Want to use Perceptol in 1+2 dilution because I use it for everything else as well. Would be very glad if someone could tell me which development time I can use to begin with since I did not find any recommendation. The massive dev. chart does give info on the old version of TriX mostly. Anyone who used this combination with 400TX already?

http://www.ilfordphoto.com/download.asp?n=1183&f=2011427133131459.pdf

I'd just split the diff between 1:1&1:3