Okay..play a variety of American and European Spectors. We have been tuning to C standard. I tuned my five string up one half step. Now, they want to go up to D standard. If I detune the bass one whole step ( a d g c f) and just not use the lowest string, the thing sounds so sloppy and messy and is so hard to play accuratly...but if i try to tune up one and a half steps I feel like I'm gonna pop a string and / or damage my neck with the increased tension....... Ideas??????