I just got a Kala Passenger UBass and I don't really like the strings it comes with. They're sticky and the E string has a weird kind of polytone that the other strings don't have. So I got some Pahoehoe UBass strings that seem to be well-liked here. The E string went in fine, but the others are all too big for the hole that goes through the bridge. The A and G strings are close, but the D string is way off. Seems like I could drill the holes to be wider. I'm thinking of just using a power drill to widen the holes as needed for the strings I got. Does that sound like a reasonable solution? I sent an email to Kala but I haven't heard back. There's nothing on their website that would suggest specific UBasses only work with specific strings. And the string diameter of several sets isn't clearly listed anyway.