That's great happycube! Sure you'll be able to fix the output width!
About "pyramid": I found the Mos Eisley shot, and here it is better IMHO than the THX DE in several way:
http://screenshotcomparison.com/comparison/126002
so I took the former, cleaned, upscaled, freely regraded, and slapped a grain plate over it:
http://screenshotcomparison.com/comparison/126000
not bad, for a 20 years laserdisc using a bad master...