Huge log file on distribution database for Merge replication

Hi,

We have couple Merge replication publications and now we noticed that distribution database log file is about 60gb. We would like to reduce size of log file.

What I have tried:

EXEC dbo.sp_MSdistribution_cleanup @min_distretention = 0, @max_distretention = 12
EXEC dbo.sp_MShistory_cleanup @history_retention = 12

DBCC SHRINKFILE (N'distribution_log',471)

but no luck.

These does not return anything:

select * FROM [distribution].[dbo].[MSrepl_transactions](nolock)
select * FROM [distribution].[dbo].[MSrepl_commands](nolock)

log_reuse_wait_desc shows NOTHING:

SELECT log_reuse_wait_desc,name from sys.databases

Subscription expiration is set to 36 hours on all publications.

Any ideas?

Thanks