hey dont blame you not knowing the parts you are trying to buy on the parts guy.. he deals with this everyday.. people come in lookking for stuff and dont know the name of it or even how to describe it.... and such.... then if they cant find the part they blame the poor parts guy...he is there to sell parts only... not to give advice or anyting else...
if you go to the grocery and were looking for milk and could not find it and then tell the clerk that it is somthing to drink and he comes up with bottled water or a coke can you blame him????? no..... so think clearly and if you dont know what you are looking for dont blame someone that is trying to help you if they dont know what you want...