By David Yates Nicky Henderson says a dislike of Cheltenham was not to blame for Jonbon’s shock defeat in the Clarence House Chase on Saturday. The eight-year-old went off the 1-4 favourite for the My Pension Expert-sponsored Grade 1 test but put in an untidy round of jumping – including a shuddering error at the fourth-last fence – before going under by a neck to 22-1 outsider Elixir De Nutz. Each of Jonbon’s career losses – he finished second to Constitution Hill in the 2022 Supreme Novices’ Hurdle and took the silver medal behind Arkle Challenge Trophy winner El Fabiolo 12 months later – ha…