<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>Yes, it's the second one. Sometimes z0 is 112.78, other times it's 112.36 (with different pz as well). The diff:</div><div><br></div><div><div>318236c318236</div><div>< <trackFit Ndof="12" chisq="15.8713" e11="0" e12="0" e13="0" e14="0" e15="0" e22="0" e23="0" e24="0" e25="0" e33="0" e34="0" e35="0" e44="0" e45="0" e55="0" lunit="cm" punit="GeV/c" px="-0.0649556" py="0.0811795" pz="0.294878" t0="-999" t0det="0" t0err="-999" tunit="ns" x0="-7.33991" y0="6.01047" z0="112.782" /></div><div>---</div><div>> <trackFit Ndof="12" chisq="15.8713" e11="0" e12="0" e13="0" e14="0" e15="0" e22="0" e23="0" e24="0" e25="0" e33="0" e34="0" e35="0" e44="0" e45="0" e55="0" lunit="cm" punit="GeV/c" px="-0.0649556" py="0.0811795" pz="0.296839" t0="-999" t0det="0" t0err="-999" tunit="ns" x0="-7.33991" y0="6.01047" z0="112.36" /></div><div><br></div></div><div>This track is being added to the factory in DTrackCandidate_factory::MatchMethod2(). I'm running a quick test writing DTrackCandidates to REST from the "CDC" factory tag, and then will do so with the "FDCCathodes" tag, to see if the problem is in one of these factories. If anyone would like to double check this, they could use the attached file and adjust the factory tag as desired.</div><div><br></div><div> - Paul</div><div><br></div><div></div></body></html>