Quote Originally Posted by kuanjb View Post
There are a couple of harder spots though. They look like they're actually a small hole which has been filled with glue
Quite often there are holes and cracks hidden under a filler that looks like glue. If you want a stain to 'take' over the top of these it may be a good idea to excavate a small amount and re-fill with natural timber mate as that will take up the stain colour once you reapply some more.