Though your compression numbers aren't totally even I wouldn't suspect them in a hard start issue. The unbalanced numbers will cause rough idle, but I wouldn't think they'd cause starting issues.

When is the last time you changed filters, or did a Diesel Purge. The Diesel Purge will clean out any buildup in the fuel system. Run it straight from the can. Also are you sure you starter and battery are up to snuff. The starter might be turning a little too slow with the cold, making it harder to start.

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