Perhaps we should read doubt for 'strain.'
"And think, perchance, they'll sell; if they do not."
"What glory our Achilles shares from Hector,
Were he not proud, we all should share with him."
We should read wins or gains for 'shares.' See Introd. p. [64]. It is remarkable that for the 'share' of the second line the folio reads wear, thus correcting the error of the 4tos.