If there is no caste system in BJP then why are you trying to make one up? Any sane person can see this.You are just trying to waste your time.
It was time from 50's to 80's people could be instigated against Jan Sangh & BJP with this technique.But people of India have wisen up now.
Start constructive work. Learn from past.BJP is perhaps the only political party in the world which was started by a group outside the ruling party & survived the utmost difficulties for this long.They are mature.People know them better.And believe me all sane people of all groups (exceps congi/commi/chmchas) like them.