I've finally found an RTOT for a UK certified L1011-500 for Runway 23 at Cambridge, flaps 10º and 22B thrust. It shows a MTOM around 149000kg with 10kt headwind at 15ºC. The ZFM is around 113,000kg, that leaves only 36,000kg disposable load. If you use still air to match 411A's figures (OK, the runway is a bit shorter and this is flaps 10º not 22º) you get a MTOM of 136,000kg and 23,000kg disposable load. It shows what an effect the higher VMCG has.
