Emulating Priority Queuing (PQ) on 7206 VXR

Hello,

I have a need for multi-level (more than 2) strict priority queuing of
IPv6 traffic flows on a Cisco 7206 VXR running IOS 12.4. Since the
router doesn't support PQ for IPv6 traffic, I was hoping that someone
has found a workaround for this limitation. I'd like to sort the
traffic into four different queues based on DSCP (EF, AF21, AF11, BE).
The only thing I can come up with is shown below and I'm not 100% sure
it is correct. Sometimes I get errors from the IOS about using > 100%
of bandwidth, although, I don't see these errors when I assign the
policy to the interface then define the classes within the policy. In
other words, it seems order-dependent.

Does anyone else have any creative ways of implementing strict-priority
queuing on a cisco? Is there a way to somehow nest policies to achieve
strict-priority queuing? Any help would be greatly appreciated.

Thanks,
Ryan...

class-map match-any Q0
match dscp ef
class-map match-any Q1
match dscp af21
class-map match-any Q2
match dscp 11
class-map match-any Q3
match dscp be

policy-map Strict-Priority-Policy
class Q0
priority percent 100
class Q1
bandwidth remaining percent 99
class Q2
bandwidth remaining percent 1

Then, the policy is applied to a particular interface with
"service-policy output Strict-Priority-Policy"