re-arched leaf springs


my LWB dai-rocky 1987 2.8 non turbo its leaning to the right and thats because the leaf pack on the righ are totaly straigh and probably bent a little the wrong way, might it fact all of them are like that so my questin is:

1. would it be ok if i take them out and restore them as well as curving them a few inches.

2. and my next question is can i do 3+1 on front and 4+1 on back or i also was thinking of 2+1 on front and either 3+1 or 4+1 on back please you tell me whats best. thanks