Glad you did it right and did not try to just glom some sealant
on it that may have gotten into the system and made matters worse.
Small hydraulic systems are pretty simple and usually only require a few specialized tools.
I have essentially the same Capilano unit. It had a small leak around then wheel
shaft a few years ago. Decided to just do a full rebuild
as it was nearly 20 years old. Ordered the full kit, tore it down...and found it really needed nothing more than the oring around the wheel