Have following configuration in Production db01-db06, added additional secondary db07 and db08, these new secondaries crash after a few minutes with the error message db/repl/rs.cpp 155. whats wrong with the configurations? i want to add additional db09 and db10 to the replicaset once this stabalizes.

db01- vote 1,Priority 1,
db02 - vote 1,Priority 1,
db03 - vote 1,Priority 1,
db04 - vote 1,Priority 0, state hidden
db05 - vote 1,Priority 0, state hidden
db06 - vote 0,Priority 0, state hidden
db07 - vote 1,Priority 0,
db08 - vote 1,Priority 0,