I currently play Roto RS66's on my H.G.Thor-epoxied fingerboard. Does anyone find D'Addario EXL170's to be any more "kind" to their fretless fingerboard (epoxied or not) than regular stainless steel strings? Or are they both equally brutal? I'm wondering if that may be one of the reasons guys like Manring, Willis and Egan use the nickelplated steels... Thanks!!