Bind9 :- Replication of files ,between Master and Slave!!!

i am facing this problem. can u suggest me what might be wrong?
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My Querry is:
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In DNS (bind9) one zone file not replicating to one slave server.
Master server two slave server(A,B) all zone transfer to two slave
server are working fine. All Zone tranfer fyn, except one zone file not
transfering from master to slave A. same zone file transfering okay
from master to slave B I checked there is not zone file syntax issue.
bind9 congfig file is okay on slave B because it is transfering all
other zone files. master server in logs it is saying transfer start,
transfer end. SlaveB server in logs it is saying, connected to master
server: Give up: time out., transfer end

Regards
Simmy