*this is impossible as I am constrained by the grandfathered building dimensions. It is all legal and the building is exactly a rectangle divided into 8 units. It’s not some odd shaped house that's hiding from inspection. The tenant B already agreed and accepted that the dimensions were acceptable. I was only looking for ideas in reasserting the agreement of the tenant.
Whehter the tenant accepted the situation or not could be irrelevent if the parking does not meet a city code. Obviously if it is grandfathered in as acceptable, then it is what it is.
You still cannot alter a lease to require them to park backwards until the lease is renewed. Then, as long as the situation is legal, then you can add that tenant "B" must park backwards in their spot. Your "rules" could be construed as an alteration of the lease which of course, would make it illegal. You could end up in court over this attempt to alter the situation but hey, they are getting cheap rent. You keep wanting to tell us that. To be honest, I don;t really care and it is irrelevent to the situation.
Tenant agrees to comply with all landlord rules and regulations that are at any time posted on the premises or *delivered to tenant. Tenant shall not, and shall ensure that guests and licensees of tenant shall not disturb annoy endanger or interfere with other tenants of the building or neighbors
again, as long as the entire situation is code compliant unless the tenant wants to fight the situation on the grounds that it is an alteration of the lease.
For some reason, you seem to be reluctant to address the local town council as to the legality of the parking situation and merely keep reiterating "it is grandfathered" but you do not seem to be able to support that claim since you apparently have never addressed this issue with the code department.
So, you can verify that you are code compliant and then you can evict the tenant due to failure to comply with the lease or you can keep bitching about it.
Your call, and remember, you have hundreds of prospective tenants waiting to move in there.