Thank you Bob for taking up your valuable time and finding those paintings of the Endeavour which has helped me a great deal in deciding the height of the mizzen lower mast . Although it does not quite work out as what is written the same as in RC Anderson book it is still  looks to be higher than what is in the drawings supplied with the kit. However I will first work out the correct lengths of the main and fore masts including below the partners and the see where I after that.