STRUGGLING aerospace group Hampson Industries has seen the value of its shares fall by more than a quarter after revealing further problems within its tooling operations.The Black Country-based group issued a notice to shareholders yesterday stating that the ongoing problems were likely to further damage full-year results.Markets reacted badly to the announcement, with the results shares dipped by more than 27%.The company was already weak due to its announcement last month that the value of its assets had fallen to less than ......for the full story register now for free or login below...