A visibly slimmer Daniel Ricciardo has admitted he is still shedding kilograms ahead of his switch to Red Bull for the 2014 F1 season.Ricciardo is among the taller and heavier drivers on the grid and recent rumours said he had trouble fitting into the cockpit of a 2014 Red Bull car.'NEED TO LOSE MORE'During the final races of 2013 some observers noticed a more gaunt Ricciardo who confirmed that he was trimming down before 2014. The 2014 V6 turbo engines and new ERS systems will add bulk to the single-seaters.Ricciardo said: "Compared to where I am now, I need to lose a couple more kilos. That's my goal. It's not a problem. I like watching UFC (ultimate fighting championship) and those guys lose eight kilos in a week or something when it gets close to the fight. Two kilos in four months will be easy."