Your trouble may be from technique... or neck profile or FB radius or set up or some combination of those. Everyone is different, so it's hard for us to pinpoint the issue. If that wasn't enough, it is entirely possible that what feels great for a short time might be a very bad choice for a four set gig or might only be a problem 3 or 4 months down the line. If there was one single answer, we'd all be playing the same bass. It may take owning several basses for a number of years to find 'the one'. If you are convinced the the Warmoth neck you want is 'it' then go for it. If it's not what you thought it would be, it should be easy to sell.