I have also noticed this, there is a church in Langley which i go past reguarly to see punjabis in large numbers. Even my pind in India which is a very small pind and i mean really small that has a church too. My gran was telling me about how one full amritdhari sengh who used to preach to her to take amrit and read bani at the pind gurdwara on a regular basis he converted to christianity too, shaved his long beard and cut his hair. I was really shocked when i found out about this. What can be done?