Am considering an EJ DE89L razor, but am slightly confused from reading several posts about them. Is the DE89L handle solid or hollow? Is the Muhle R89 handle solid or hollow? If hollow, do either of them open to allow adding weights? My concern is two-fold; balance and how easily they may become dented. I do understand that different handles are available that would fit the DE89L, but would rather avoid that if possible. Thanks for any info.