flexable linekey issues and expansion bay issues with BLF

I'm having trouble getting consistent results here.

I can't get a number of BLF's to work.  Here are the relevant config lines:

<PHONE_CONFIG><ALL

linekey.reassignment.enabled=1
reg.1.displayName="101"
reg.1.address="101-xyz"
reg.1.label="101"
reg.1.type="private"
reg.1.auth.userId="101-xyz"
reg.1.auth.password="12345678790"
reg.1.callsPerLineKey="1"
reg.1.lineKeys="1"
reg.1.server.1.address="sipserver"
reg.1.server.1.port="5060"
reg.1.server.1.transport="TCPpreferred"
reg.1.server.1.expires="60"
reg.1.server.1.subscribe.expires="60"
reg.1.ringType="2"
lineKey.1.category="Line"
lineKey.1.index=1

~~~~~~~~~~~~~then~~~~~~~~~~~~~

attendant.resourceList.7.address="103-xyz@pbxhost"
attendant.resourceList.7.label="103-xyz"
attendant.resourceList.7.type="automata"
lineKey.7.category="BLF"
lineKey.4.index="0"
attendant.resourceList.8.address="104-xyz@pbxhost"
attendant.resourceList.8.label="104-xyz"
attendant.resourceList.8.type="automata"
lineKey.8.category="BLF"
lineKey.4.index="0"
attendant.resourceList.9.address="105-xyz@pbxhost"
attendant.resourceList.9.label="105-xyz"
attendant.resourceList.9.type="automata"
lineKey.9.category="BLF"
lineKey.4.index="0"

etc etc. I've tried adding 20 BLF entires and I only ever get 4-6 entries on the phone, none on the expansion module.

Any ideas?