Hi, I modified my Birdy 9speed monocoque (bought 2007) using Joseph Kuosac parts with work done by my local bike store. I changed the wheels to their carbon wheels with Kojak tyres, changed from a nine to a 10 speed capreo cassette (9-28) and a 56T chainring. The derailleur was changed to a long travel 105 with a 10 speed tiagra shifter. The bike is great to ride and much faster now BUT the gearing and derailleur are awful. The long travel derailleur almost touches the ground. The shifting is sort of awful as well, it shifts down well but shifting up it skips and slides. Any helpful suggestions? I was wondering about changing to a MTB short travel derailleur and matching shifter.