I have a set of Corelli 370 (medium) and the E and A are just... "flubby". The E is almost non-musical. The A seems to want to cling to my finger, making transitioning to the D difficult.
Is this just a string issue, or could there be something wrong in the set-up? The scale length is 42". Bass is a late 50's Epiphone, massively abused in the school system and recently repaired to playability. Strings have been on a week tomorrow.
I'm new to double bass, but I come from a land of higher-tension strings.

I realize the longer scale is going to make the strings (in general) softer feeling than what I'm used to. I also acknowledge that as a beginner my technique is terrible at the moment, but I don't see any way to get the E playable simply with technique. (<-
if I'm wrong there, tell me!)
Any advice welcome, including other string suggestions. I purchased the Corelli as a compromise between pizz and arco, as I would like to develop both styles.