ohhh k, herez what i will do then i'll get sump nut thread from kharadia, check head and cylinder surface checked from kharadia, install gas kit by myself and for timing i'll ring my mechanic and he will drop to my place for a cup of tea and that will be fine, i'll put the timing chain on and he will check it for me this time
waise do tell me, i top the engine and then very gently place chain over the small cog and try to place all three nuts into place, even if there is slightest miss alignment i should change remove the chain and fit cog to the next hook of chain and align the nuts all this without slightest movement of the engine, if i remember correctly there is something else to it too, plz lemme know
sir ji aise bhi baat nahi hai, F1 car ka engine bhi har race k baad khulta hai, tractor pull events ki machines ka bhi yahee haal hai, mere 70 bechari ne aise kar dia tu uss ko itna bara ilzaam tu na dein na 
and yes its truth it will be rare chances that it will go to its original shape but gotta do it.