Thanks MR. He does chew on pieces of toast and baby rusks. He will even give a whole pear a good go, but he hardly swallows any of it. He gets really whingy until I give him the bulk of his food in puree form and this is where we run into lump-issues. He just seems to want to guzzle it down without chewing or mashing. If there are any lumps he gags and after he gags a few times he refuses anymore until I offer him some smooth grub. It isn't bothering me and I know in time he will have more lumpy food (I try periodically with lumpy food to see if things have improved). In summary, he doesn't ingest the volume he wants / requires in BLS form so at this stage it isn't a solution in that it still leaves him hungry.