Re: Mark 30 gear case cover tool (C-91-29950) Home › Forum › Ask A Member › Mark 30 gear case cover tool (C-91-29950) › Re: Mark 30 gear case cover tool (C-91-29950) dave-bernardUS Member - 1 Year (includes $3 online payment fee)Replies: 2014Topics: 30 August 9, 2018 at 8:20 pm #80888 JohnMcintash.com make them. 69.95 and does both just like the merc ones.