Update: I didn't realize a single space behaved like /\s+/, so ignore that bit below. That seems counter-intuitive to me, but whatever. That, and I'm used to specifying "real" patterns to split, not this awk-compatibility bit.

You are splitting on a single space, which messes up if you have multiple spaces between your "fields" (u: this is the incorrect bit). You might use /\s+/ as your split delimiter instead.

A regex to get the first set of non-numerics out of your 3rd field could be /([a-z]+)/ or /(\D+)/. Avoid the use of .* as you're doing, since it involves a bit of back-tracking and is generally less efficient than explicitely mapping out what you do want.