SLANTY BLUES

I went to the Oregon site but could not find the 2106
None of those numbers can be used to calculate your Dcr
The 444/434 numbers are valve lift, probably design lift.
The 214/210 ar probably duration at .050
the 254 COULD be an advertised number, it looks about right, but it straddles the preceeding numbers so can't say which it belongs to. Maybe both I just don't know.
And without an installed centerline, you could still only guess at what number to plug in, and because it's a solid with no net installed numbers we're kindof screwed